Keith J. Petrie
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View article: Mental health and suicidal ideation from 2010 to 2023 among university students: national repeated cross-sectional analysis
Mental health and suicidal ideation from 2010 to 2023 among university students: national repeated cross-sectional analysis Open
Background Mental health problems among university students have been on the rise, with particularly high levels reported during the COVID-19 pandemic. While many studies have examined the immediate effects of the pandemic, long-term trend…
View article: From loneliness to depression: A longitudinal diagnostic study among Norwegian university students
From loneliness to depression: A longitudinal diagnostic study among Norwegian university students Open
Purpose Loneliness is an increasing public health concern among young adults. There is insufficient prior research on the association between loneliness and depressive disorder among students in higher education. Methods This prospective p…
View article: Rasch analysis of the hospital anxiety and depression scale in patients with chronic fatigue syndrome
Rasch analysis of the hospital anxiety and depression scale in patients with chronic fatigue syndrome Open
The HADS demonstrated acceptable measurement properties in patients with CFS. The development of ordinal-to-interval conversion tables enhances the scale's precision, supporting its continued use in clinical and research contexts.
View article: Perceptions About Asymptomatic Hyperuricemia and Views About Urate‐Lowering Therapy in People With Asymptomatic Hyperuricemia
Perceptions About Asymptomatic Hyperuricemia and Views About Urate‐Lowering Therapy in People With Asymptomatic Hyperuricemia Open
Objective Asymptomatic hyperuricemia is a precursor of gout and is also associated with cardiovascular disease and chronic kidney disease. The aim of this study was to understand perceptions about asymptomatic hyperuricemia and views about…
View article: Comparing illness perceptions in inflammatory bowel disease and irritable bowel syndrome
Comparing illness perceptions in inflammatory bowel disease and irritable bowel syndrome Open
IBS patients have more adverse perceptions about their condition than IBD patients and these have a stronger relationship with symptom reporting and anxiety. Clinicians should be mindful of the impact a functional diagnosis can have on ill…
View article: Relationship Between Gout Flare States and Patient‐Reported Outcomes After Allopurinol Initiation
Relationship Between Gout Flare States and Patient‐Reported Outcomes After Allopurinol Initiation Open
Objective Gout flares are the most important clinical feature of the disease. A hypothetical maximum flare occurrence in the preceding six months has been suggested to be no flares for a patient‐acceptable symptom state (PASS) and only one…
View article: Predicting the side effects of influenza vaccination
Predicting the side effects of influenza vaccination Open
Background Side effects following vaccination intensify vaccine hesitancy, which remains a significant challenge to public health. Research suggests that a proportion of side effects are not caused by the vaccine but are instead associated…
View article: Side effects following administration of open-placebos: A randomized controlled trial
Side effects following administration of open-placebos: A randomized controlled trial Open
The trial was preregistered at the Australian New Zealand Clinical Trials Registry (12622001570774).
View article: Changing mindsets about methotrexate in the rheumatology clinic to reduce side effects and improve adherence: a randomized controlled trial
Changing mindsets about methotrexate in the rheumatology clinic to reduce side effects and improve adherence: a randomized controlled trial Open
Background Patients’ negative expectations about medication can exacerbate side effect burden leading to low adherence and persistence. A novel intervention involves targeting mindsets about non-severe symptoms; reframing them as encouragi…
View article: Analysis of Gout Remission Definitions in a Randomized Controlled Trial of Colchicine Prophylaxis for People With Gout Initiating Allopurinol
Analysis of Gout Remission Definitions in a Randomized Controlled Trial of Colchicine Prophylaxis for People With Gout Initiating Allopurinol Open
Objective To investigate (1) the effect of colchicine prophylaxis on gout remission when commencing urate-lowering therapy (ULT), and (2) illness perceptions of people in remission using 2 definitions of gout remission. Methods Data from a…
View article: A possible nocebo effect in children following the Flint Water Crisis: Evidence from schoolteacher perceptions and neuropsychological evaluations
A possible nocebo effect in children following the Flint Water Crisis: Evidence from schoolteacher perceptions and neuropsychological evaluations Open
Objective: Special education enrollment increased in Flint following the 2014-15 Flint Water Crisis but lead exposure is not plausibly responsible. Labeling Flint children as lead poisoned or /brain damaged may have contributed to rising s…
View article: A Possible Nocebo Effect in Children Following the Flint Water Crisis: Evidence From Schoolteacher Perceptions and Neuropsychological Evaluations
A Possible Nocebo Effect in Children Following the Flint Water Crisis: Evidence From Schoolteacher Perceptions and Neuropsychological Evaluations Open
Objective Special education enrollment increased in Flint following the 2014–2015 Flint Water Crisis, but lead exposure is not plausibly responsible. Labeling Flint children as lead poisoned and/or brain damaged may have contributed to ris…
View article: A content analysis of medication adherence material in patient educational resources about gout
A content analysis of medication adherence material in patient educational resources about gout Open
Objective This study aimed to investigate how medication adherence is addressed in online gout resources in six countries. We investigated how often adherence was referred to, the strategies suggested to improve patient adherence, and the …
View article: Health scares: Tracing their nature, growth and spread
Health scares: Tracing their nature, growth and spread Open
Background Health scares are highly publicised threats to health that increase public concern and protective behaviours but are later shown to be unfounded. Although health scares have become more common in recent times, they have received…
View article: Which fatigue scale should I use? A Rasch analysis of two fatigue scales in inflammatory conditions
Which fatigue scale should I use? A Rasch analysis of two fatigue scales in inflammatory conditions Open
Objectives This study aimed to assess the psychometric properties of two widely used fatigue scales in a sample of patients with inflammatory conditions. Methods Rasch analysis was used to examine scale reliability, item bias, unidimension…
View article: Can Smartphone Notifications Help With Gout Management? A Feasibility Study
Can Smartphone Notifications Help With Gout Management? A Feasibility Study Open
Objective This feasibility study aimed to assess the acceptability of using smartphone notifications to modify the medication beliefs of people with gout. We evaluated the feasibility and acceptability of a smartphone application using the…
View article: The Big Picture: Patient Drawings of Gout and Their Relationship to Illness Perceptions and Stigma
The Big Picture: Patient Drawings of Gout and Their Relationship to Illness Perceptions and Stigma Open
Patients9 drawings of their illnesses have been used as a unique way of assessing illness perceptions in a wide range of diseases, including cardiac, respiratory, endocrine, and neurological conditions.1,2 Patient drawings can reveal belie…
View article: Loneliness across the COVID-19 pandemic: Risk factors in Norwegian young people
Loneliness across the COVID-19 pandemic: Risk factors in Norwegian young people Open
Background There is evidence of increasing levels of loneliness in Norwegian young people before the COVID-19 pandemic. It is not clear how the COVID-19 pandemic, and the associated necessary restrictions, impacted on these trends. Aims To…
View article: Modern health worries and annoyance from environmental factors are largely unrelated to smoking, alcohol consumption, and physical activity
Modern health worries and annoyance from environmental factors are largely unrelated to smoking, alcohol consumption, and physical activity Open
Individuals with high levels of modern health worries and annoyance from various environmental agents are not clearly characterized by a healthier lifestyle. Perhaps they focus on the alleviation of their existing symptoms; alternatively, …
View article: Changing Mindsets About Side Effects of the COVID-19 Vaccination: A Randomized Controlled Trial
Changing Mindsets About Side Effects of the COVID-19 Vaccination: A Randomized Controlled Trial Open
Background Side-effect concerns are a major barrier to vaccination against COVID-19 and other diseases. Identifying cost- and time-efficient interventions to improve vaccine experience and reduce vaccine hesitancy—without withholding infor…
View article: Did a nocebo effect contribute to the rise in special education enrollment following the Flint, Michigan water crisis?
Did a nocebo effect contribute to the rise in special education enrollment following the Flint, Michigan water crisis? Open
Background Exposure to waterborne lead during the Flint Water Crisis during April 2014-October 2015 is believed to have caused increased special education enrollment in Flint children. Method This retrospective population-based cohort stud…
View article: The Treatment Expectation Questionnaire (TEX-Q): Validation of a generic multidimensional scale measuring patients’ treatment expectations
The Treatment Expectation Questionnaire (TEX-Q): Validation of a generic multidimensional scale measuring patients’ treatment expectations Open
Background Patients’ expectations, as a central mechanism behind placebo and nocebo effects, are an important predictor of health outcomes. Yet, theoretically based generic assessment tools allowing for an integrated understanding of expec…
View article: Pharmacists' confidence in explaining biosimilars to patients before a nationwide medicine change: A cross-sectional study
Pharmacists' confidence in explaining biosimilars to patients before a nationwide medicine change: A cross-sectional study Open
Pharmacists reported a lack of knowledge and confidence in explaining manufacturing processes and testing of biosimilars. Additional resources are needed to support their practice and may help improve patient and companion acceptance of bi…
View article: Prioritising long‐term outcomes for preterm babies: A survey of consumers and clinicians
Prioritising long‐term outcomes for preterm babies: A survey of consumers and clinicians Open
Aim To determine if consumers and clinicians believe intelligence or health outcomes are more important long‐term outcomes for babies born preterm. Methods Prospective, online survey of six outcomes ranked using a hierarchy ladder, Likert …
View article: Why Do Patients With Gout Not Take Allopurinol?
Why Do Patients With Gout Not Take Allopurinol? Open
Objective. The objectives of this study were to examine the reasons patients give for nonadherence to allopurinol and to examine differences in intentional nonadherence for patients who did and did not achieve serum urate (SU) levels at tr…
View article: Changes in mental health problems and suicidal behaviour in students and their associations with COVID-19-related restrictions in Norway: a national repeated cross-sectional analysis
Changes in mental health problems and suicidal behaviour in students and their associations with COVID-19-related restrictions in Norway: a national repeated cross-sectional analysis Open
Objective The COVID-19 pandemic has had a devastating impact on higher education, with the closure of student campuses. The aim of this study was to examine changes and prevalence of mental health problems, suicidal ideation and suicidal b…
View article: The mode of delivery and content of communication strategies used in mandatory and non-mandatory biosimilar transitions: a systematic review with meta-analysis
The mode of delivery and content of communication strategies used in mandatory and non-mandatory biosimilar transitions: a systematic review with meta-analysis Open
Effective patient-provider communication is crucial to promote shared decision-making. However, it is unclear how to explain treatment changes to ensure patient acceptance, such as when transitioning from a bio-originator to a biosimilar. …
View article: The Epidemiology of Insomnia and Sleep Duration Across Mental and Physical Health: The SHoT Study
The Epidemiology of Insomnia and Sleep Duration Across Mental and Physical Health: The SHoT Study Open
Objective Numerous epidemiological studies have been conducted to examine the prevalence and comorbidities of insomnia and document sleep duration, but a common limitation in many studies is the lack of use of agreed-upon definitions of in…